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implement default jaxb data store

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This commit is contained in:
Sebastian Sdorra
2012-11-20 21:53:07 +01:00
parent c4f9917238
commit bb8171f399
2 changed files with 368 additions and 0 deletions
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235
scm-dao-xml/src/main/java/sonia/scm/store/JAXBDataStore.java Normal file
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/**
* Copyright (c) 2010, Sebastian Sdorra All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer. 2. Redistributions in
* binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution. 3. Neither the name of SCM-Manager;
* nor the names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* http://bitbucket.org/sdorra/scm-manager
*
*/
package sonia.scm.store;
//~--- non-JDK imports --------------------------------------------------------
import com.google.common.base.Preconditions;
import com.google.common.base.Strings;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sonia.scm.security.KeyGenerator;
//~--- JDK imports ------------------------------------------------------------
import java.io.File;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
/**
*
* @author Sebastian Sdorra
*
* @param <T>
*/
public class JAXBDataStore<T> extends AbstractDataStore<T>
{
/** Field description */
private static final String SUFFIX = ".xml";
/**
* the logger for JAXBDataStore
*/
private static final Logger logger =
LoggerFactory.getLogger(JAXBDataStore.class);
//~--- constructors ---------------------------------------------------------
/**
* Constructs ...
*
*
* @param type
* @param keyGenerator
* @param directory
*/
public JAXBDataStore(KeyGenerator keyGenerator, Class<T> type, File directory)
{
super(keyGenerator);
try
{
context = JAXBContext.newInstance(type);
this.directory = directory;
}
catch (JAXBException ex)
{
throw new StoreException(ex);
}
}
//~--- methods --------------------------------------------------------------
/**
* Method description
*
*/
@Override
public void clear()
{
logger.debug("clear store");
for (File file : directory.listFiles())
{
remove(file);
}
}
/**
* Method description
*
*
* @param id
* @param item
*/
@Override
public void put(String id, T item)
{
logger.info("put item {} to store", id);
File file = getFile(id);
if (file.exists())
{
try
{
Marshaller marshaller = context.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
marshaller.marshal(item, file);
}
catch (JAXBException ex)
{
throw new StoreException("could not write object with id ".concat(id),
ex);
}
}
}
/**
* Method description
*
*
* @param id
*/
@Override
public void remove(String id)
{
File file = getFile(id);
remove(file);
}
//~--- get methods ----------------------------------------------------------
/**
* Method description
*
*
* @param id
*
* @return
*/
@Override
public T get(String id)
{
logger.trace("try to retrieve item with id {}", id);
T item = null;
File file = getFile(id);
if (file.exists())
{
try
{
item = (T) context.createUnmarshaller().unmarshal(file);
}
catch (JAXBException ex)
{
throw new StoreException("could not read object with id ".concat(id),
ex);
}
}
return item;
}
//~--- methods --------------------------------------------------------------
/**
* Method description
*
*
* @param file
*/
private void remove(File file)
{
if (file.exists() &&!file.delete())
{
logger.debug("delete store entry {}", file);
throw new StoreException(
"could not delete store entry ".concat(file.getPath()));
}
}
//~--- get methods ----------------------------------------------------------
/**
* Method description
*
*
* @param id
*
* @return
*/
private File getFile(String id)
{
Preconditions.checkArgument(!Strings.isNullOrEmpty(id),
"id argument is required");
return new File(directory, id.concat(SUFFIX));
}
//~--- fields ---------------------------------------------------------------
/** Field description */
private JAXBContext context;
/** Field description */
private File directory;
}

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scm-dao-xml/src/main/java/sonia/scm/store/JAXBDataStoreFactory.java Normal file
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/**
* Copyright (c) 2010, Sebastian Sdorra All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer. 2. Redistributions in
* binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution. 3. Neither the name of SCM-Manager;
* nor the names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* http://bitbucket.org/sdorra/scm-manager
*
*/
package sonia.scm.store;
//~--- non-JDK imports --------------------------------------------------------
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sonia.scm.SCMContextProvider;
import sonia.scm.security.KeyGenerator;
import sonia.scm.util.IOUtil;
//~--- JDK imports ------------------------------------------------------------
import java.io.File;
/**
*
* @author Sebastian Sdorra
*/
@Singleton
public class JAXBDataStoreFactory implements DataStoreFactory
{
/**
* the logger for JAXBDataStoreFactory
*/
private static final Logger logger =
LoggerFactory.getLogger(JAXBDataStoreFactory.class);
//~--- constructors ---------------------------------------------------------
/**
* Constructs ...
*
*
* @param context
* @param keyGenerator
*/
@Inject
public JAXBDataStoreFactory(SCMContextProvider context,
KeyGenerator keyGenerator)
{
this.context = context;
this.keyGenerator = keyGenerator;
}
//~--- get methods ----------------------------------------------------------
/**
* Method description
*
*
* @param type
* @param name
* @param <T>
*
* @return
*/
@Override
public <T> DataStore<T> getStore(Class<T> type, String name)
{
logger.debug("create new store for type {} with name {}", type, name);
return new JAXBDataStore<T>(keyGenerator, type, getDirectory(name));
}
/**
* Method description
*
*
* @param name
*
* @return
*/
private File getDirectory(String name)
{
if (dataDirectory == null)
{
dataDirectory = new File(context.getBaseDirectory(), "var");
}
File storeDirectory = new File(dataDirectory, name);
IOUtil.mkdirs(storeDirectory);
return storeDirectory;
}
//~--- fields ---------------------------------------------------------------
/** Field description */
private SCMContextProvider context;
/** Field description */
private File dataDirectory;
/** Field description */
private KeyGenerator keyGenerator;
}